Spotting

I got off the nexplanon on February 27th. Only had sex 3 times (with protection and him pulling out) getting off of it. I’ve had 2 periods. I just don’t understand the spotting. It’s very light. Is it possibly that my body is still adjusting to being on the nexplanon for so long. I was on it for 1 year and almost 5 months. I know it’s probably gonna take me a little while to be adjusted. Just trying to see if anyone else has had similar experiences.

Thanks in advance.